Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 75, Issue 4, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.75.043703
Keywords
pressure; non-Fermi liquid; superconductivity; without inversion symmetry; CeIrSi3
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We report the discovery of pressure-induced superconductivity in an antiferromagnet CeIrSi3, which lacks inversion symmetry in the tetragonal crystal structure. The Neel temperature T-N = 5.0 K at ambient pressure decreases monotonically with increasing pressure, and becomes zero at about 2.5 GPa. Superconductivity appears in a wide pressure region from 1.8 GPa to about 3.5 GPa. with a relatively large superconduting transition temperature T-Sc = 1.6 K and a large tipper critical field H-c2(0) = 11.1 T at 2.5GPa, indicating heavy-fermion superconductivity.
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